Gaje Singh
Sardar Vallabhbhai Patel University of Agriculture & Technology, India.
Title: Efficacy of plant extracts oil against Sitophilus oryzae (L.) in stored wheat grains
Biography
Biography: Gaje Singh
Abstract
The toxicity of plant extracts oil were studied against rice weevil Sitophilus oryzae L under laboratory conditions at Department of Entomology, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut (Uttar Pradesh), India. The treatments were eucalyptus essential oil 1.0 % (10μl in 1000μl ethanol), lemongrass essential oil 1.0 % (10μl in 1000μl ethanol), citrus essential oil 1.0 % (10μl in 1000μl ethanol), Eucalyptus essential oils of 0.5 % (5μl) + Lemongrass essential oils of 0.5 % (5μl) in 1000μl ethanol, Lemongrass essential oils of 0.5 % (5μl) + Citrus essential oils of 0.5 % (5μl) in 1000μl ethanol, Citrus essential oils of 0.5 % (5μl) + Eucalyptus essential oils of 0.5 % (5μl) in 1000μl ethanol and control. The data was recorded for various parameters viz. per cent adult mortality, grain damage, weight loss and progeny emergence. Among all treatments the combination of eucalyptus essential oils (0.5%) + lemon grass essential oils (0.5%) was found best and recorded consistently with increased rate of adult mortality 61.67, 78.33 and 96.67 per cent after 7 ,14 and 21 days, respectively. Reduction in progeny emergence 94.44,78.17 and 78.06 per cent after 50,65 and 75 days, respectively. This treatment also recorded with minimum loss in weight of 2.67 per cent and minimum grain damage of 6.00 per cent after 75 days of insect release. The minimum adult mortality 0.00 per cent, maximum grain damage 25.33 per cent and maximum weight loss 25.50 per cent were recorded in control.